Specialist Ivan Lopez, who went on a shooting spree yesterday at Fort Hood, killing three people and wounding 16, had mental health issues, CNN reported. Lopez had a history of depression, anxiety and other issues, and he was undergoing tests to see if he had post-traumatic stress disorder from his time in Iraq.

Happening today

The search continues for the missing Malaysia Airlines Flight 370, with no promising leads in sight. One Australian official called the search "the most difficult in human history," according to AP.

Opening bell

The Dow Jones opened at 16,573.00 after finishing up 40.39 points Wednesday.

Quote of the day

"U.N. experts are saying that climate change could start threatening the world's supply of fruits and vegetables. Then Americans said, 'OK, let us know when it starts affecting Twinkies and Hot Pockets.'" - Jimmy Fallon

Hot video: Clinton on aliens

Former President Bill Clinton says he wouldn't be surprised if we were visited by aliens.